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ciaroman23
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Member Since: ‎12-02-2011
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Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

I have 2 gig ram, but really need to speed it up to 8 gig. I'd like to also get win 7 for the desktop. Before I get any of this, I need to know since my current OS is 32 bit but 64 bit capable, if I install windows 7 64 bit will it upgrade from 32 to 64? And then will the 8 gb RAM actually work if I purchase that as well? Will I run into any problems the hardware inside (processors or motherboard (intel core 2 cpu 6700@2.66 ghz))? I don't understand 32 bit to 64 bit conversions... Thanks

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Paul_Tikkanen
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Member Since: ‎07-13-2010
Message 2 of 18 (2,228 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

[ Edited ]

Hi:

 

Yes, your hardware is 64 bit capable.

 

You can install 4 x 2GB of PC2-6400 memory for best memory performance and capacity (8 GB).

 

You cannot do an in-place upgrade of any 32 bit OS to a 64 bit OS.

 

You will need to back up all your files, gather any program installation disks/files you want to reinstall on the 64 bit OS, and do what is known as a custom or clean install of Windows 7.

 

If you live in the USA or Canada, this is the memory I recommend for your PC once you bring it to a 64 bit OS:

 

4 of these: (the CAS latency is faster than the second link below)

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16820220279

 

or

 

2 of these kits:

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148160

 

Paul

 

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wb2001
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Message 3 of 18 (2,223 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

Paul,

That is not entirely true any more.

A custom upgrade from 32 to 64 bit is now possible per MS.

http://windows.microsoft.com/en-us/windows7/32-bit-and-64-bit-Windows-frequently-asked-questions

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lasvegaswireman
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Message 4 of 18 (2,222 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

Paul wrote: You can install 2 x 2GB of PC2-6400 memory for best memory performance and capacity (8 GB).

 

@Paul... I think you meant 4 x 2GB of PC2-6400 memory... at least that is my understanding based on the m/b specs which state;

 

Memory upgrade information
Dual channel memory architecture
Four 240-pin DDR2 DIMM sockets
Supports PC2 4200 (533 MHz), PC2 5300 (667 MHz) and PC2 6400 (800 MHz) DDR2 DIMMs
supports 2GB DDR2 DIMMs
Supports up to 8 GB on 64 bit PCs
Supports up to 4 GB* on 32 bit PCs
NOTE:*Actual available memory may be less

 

Frank


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Paul_Tikkanen
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Message 5 of 18 (2,219 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

Hi;

 

Yes I meant  4 x 2 GB, and I have edited my post accordingly.

 

I know you can do a custom upgrade, which is precisely what I wrote.

 

You CANNOT do an in-place upgrade from a 32 bit file system to a 64 bit file system.

 

You must boot from the 64 bit disk and completely reinstall the OS. You cannot directly upgrade a 32 bit OS.

 

You can do an inplace upgrade from Vista 32 bit to W7 32 bit, and Vista 64 bit to W7 64 bit, but you cannot do an in-place upgrade from XP to W7 or from a 32 bit version to a 64 bit version, or visa versa.

 

That statement I will not amend in any way.

 

Paul

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ciaroman23
Posts: 18
Member Since: ‎12-02-2011
Message 6 of 18 (2,197 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

Thank you all for your help. Still having a problem understanding though. So, I can purchase the RAM, install it first 9after back up of course), purchase Windows 7 disk, and install then install 64 bit OS of Win 7, in which it will convert my desktop to 64 bit computer? Or do I have to install Windows 7 32 bit disk because of my current status with Vista is 32 bit, and it can not be upgraded to 64 bit at all? I have always been confused on this...

 

Paul, I see where you said I have to wipe the system clean and install 64 bit Win 7, but then its contradicted by saying I cannot do an in-place upgrade. I take that to mean I cannot download Win 7? Also, t I have looked at Crucial.com, and it recommends:

 

http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=F296D011A5CA7304

 

and this: 

 

http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=F296D011A5CA7304

 

Which is the more optimal? Reason I ask again though you have posted it already, is that you say that "4 of these; latency is better http://www.newegg.com/Product/Product.aspx?Item=N82E16820220279" than this: http://www.newegg.com/Product/Product.aspx?Item=N82E16820148160, and are the newegg links compatible with this desktop or should I go with what crucial states? I do appreciate the cheaper links btw.

 

 

WB, I already researched the weblink you posted as well, and I thank you for that. I tried to find the question through google and microsoft, as well as the Win 7 compatible tool, though I already found it.

 

And Vegas, thank you for clearing the 4x2 question up I was going to ask next :smileywink:

 

BTW, I do know a bit about computers, but not the intricate tech knowledge stuff like this. I also have never added any upgrades to a computer ever... unless we were talking old school Commodore 64 and Apple 2 E :smileywink:...I can figure out how to install things though, and as long as I don't have to install other internal parts to the computer for an upgrade of 64 bit (if possible btw, such as power supply etc), I should be ok.  I appreciate all of you guys knowledge and help!!!

 

 

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lasvegaswireman
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Message 7 of 18 (2,195 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

Since you are currently running Vista 32bit and wish migrate to Window 7 64bit, my suggested upgrade path would be to backup your computer in its current state. That includes backing up every you wish wish to save, like user files, data, etc. Then do a clean install of WIndow 7 64bit by inserting the Win7 64bit disc into the DVD drive and rebooting the computer. After WIndows finishes installing, you may need some driver to gain full functionality... Just come back here for assistance with that.

 

Frank


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ciaroman23
Posts: 18
Member Since: ‎12-02-2011
Message 8 of 18 (2,192 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

Thank you Frank. that was the EXACT answer I was looking for!!!! :smileyhappy: 

 

Now, all I need to know is about the RAM. Is the newegg.com RAM listed above in the links compatible with this computer, or should I follow the crucial.com links adivise since I downloaded their scan?

 

 

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Paul_Tikkanen
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Member Since: ‎07-13-2010
Message 9 of 18 (2,190 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

[ Edited ]

Hi, Ciaroman:

 

Like I explained to wb2001, there is a difference between an in-place upgrade, and a custom (clean install).

 

An in-place upgrade means you keep all of your files, programs and settings when you upgrade to Windows 7.

 

While I still recommend backing up your files in case something goes wrong, all you do is pop in the disk at the Windows desktop and it installs Windows 7, and other than that, your PC is just the way it was before you upgraded, except you now have Windows 7 instead of Windows Vista.

 

You may have to install a couple of drivers, but that should be all you need to do.

 

When you move from a 32 bit OS to a 64 bit OS you cannot do an in-place upgrade.

 

You have to back up all of your files and completely reload all files, personal settings, and programs once your new 64 bit OS is installed.

 

That method of installation is called a custom or clean install.

 

Now as to the memory...Basically the Crucial memory is the same as the memory I posted from NewEgg.

 

If you feel 'safer' purchasing from Crucial, by all means do so.

 

I'm just giving you options to less expensive, but equally as decent memory.

 

That choice is yours.

 

I can only say I have bought all my memory from NewEgg (crucial or patriot) for both desktops and notebooks for a few years now, and never have had an issue with compatiblilty yet.

 

Here's an article about CAS latency which explains it better than I could. Basically the lower the latency number, the faster the memory performs. This is not the same as the speed in MHz it performs at.

 

http://en.wikipedia.org/wiki/CAS_latency

 

So, as cas 5 chip of the same 800 Mhz memory should give you a slightly better Windows Experience Index # than a cas 6 chip.

 

I am by no means a memory expert. I didn't even know there were CAS 5 PC2-6400 chips. I thought they were all CAS 6 and that all PC2-5300 memory modules were CAS5.

 

In any event, I went with the Crucial memory because it was cheaper at the time.

 

So, to sum up...

 

In-place upgrade is NOT the same as a custom upgrade.

 

In place keeps all files and settings and just installs the OS over the existing one.

 

Custom:  All files and programs must be reinstalled after installing the OS.

 

CAS 5 memory 'faster' than CAS 6 memory.

 

Just for kicks, when you get your W7 installation disks (I recommend you buy the retail package so you get both a 32 and 64 bit version), put the 64 bit OS installation disk in your DVD drive at the windows desktop and see what happens.

 

Then remove that disk and insert the 32 bit W7 install disk and see what happens.

 

You will then have proof positive there is no way you can do an inplace upgrade to a 64 bit OS from a 32 bit OS.

 

Personally, I would do a custom (clean install) of a 32 to a 32 bit OS or 64 to 64 bit OS anyway. I am leery of an inplace upgrade bringing old baggage to the new install.

 

Please post back if you have additional questions or need any further assistance.

 

Paul

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ciaroman23
Posts: 18
Member Since: ‎12-02-2011
Message 10 of 18 (2,185 Views)

Re: Can I upgrade from Vista 32 bit to Win 7 64 bit on hp pavillion d4790y?

And again, Paul. Thank you so much for the info. Exactly the anwer(s) I needed to know. I am going to do the custom install btw and upgrade so I can utilize the 8gb RAM. Last question before I do this... should I back up on external or dvds? 

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