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mornplayroblox
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ram not fully usable

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HP Pavilion 500-311x
Microsoft Windows 8.1 (32-bit)

I recently bought 2GB additional ram for my old 2GB PC and it was 1,89GB usable ( it was fine ), but after i inserted my ram and, oh god, the ram usable is just 3,41GB ram usable out of 4GB, the system reserved only takes 100MB. Can someone pls give me a solution? I bought my PC at about June 2014.

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VH2000
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That's ok. A 32 bit machine can adress just 2^32 bit of the Ram. You need a 64 bit  to access more.

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TheOldMan
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Actually the "the system reserved only takes 100MB" is space on the hard drive and not system resources, but the 3.14GB available is not out of reason for system overhead taking the rest.  @VH2000 comment about switching to 64 bit is advisable for RAM above the 4GB limit of the 32 bit OS, however.


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itsmyname
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@TheOldMan -- Actually the "the system reserved only takes 100MB" is space on the hard drive and not system resources, 

 

I disagree that it is disk-space.

 

Before adding the RAM, there was 1.89 GB available, leaving about 100 MB of RAM "stolen" by the motherboard.  After adding the RAM, there still is that 100 MB of RAM "stolen".

Maybe, that 100 MB is used as a video-buffer.

 

Due to internal memory-allocations by 32-bit Windows, Windows can only use the first 3.2 GB of RAM.

The addresses between 3.2 GB and 3.9 GB are "reserved" by Windows.

 

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Prométhée
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Hello
and having the exact configuration would help a bit as well.

Hello

[start]
This is an automatic response
in order to avoid writing the same thing each time

Some elements may therefore not apply to you 
To be able to answer you effectively, we need some information

 

we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
and for a laptop
HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

Give the full name with the product number P / N


this is not a model:
HP Desktop M01-F1xxx
the requested product number must look like this
Product Number: 9EE50AA # ABA
the model corresponding to this number will therefore be
HP Desktop - M01-F1033wb

Give the full version of windows

for windows 10 type winver in the search box
if you give the best information
your problem could have a solution more quickly (depending on the difficulty, of course)
Learn how to use the Community

 

Advice for asking the "Very Best Question"

 

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mornplayroblox
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i see, so that's why it is now 604MB hardware reserved?

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Prométhée
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Give screenshots of the parameters where you see all the information of what you have
Check the video settings
It is also quite possible that a quantity of memory allocated to the graphics card, is more important, since you have more memory installed.

https://www.crucial.com/support/memory-windows-recognize-4gb

 

https://support.microsoft.com/en-us/topic/the-usable-memory-may-be-less-than-the-installed-memory-on...

 

 


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itsmyname
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@mornplayroblox -- i see, so that's why it is now 604 MB hardware reserved?

 

Yes. The 32-bit version of Windows uses the first 3.2 (or up to 3.4?) GB of RAM.

The motherboard "borrows" the last 100 (128?) MB for some other reason (video buffers?), making that range of addresses of RAM unavailable to any operating system (Linux, 64-bit Windows).

 

What is left in the "middle" is reserved by Windows (not by the motherboard) to avoid problems within 32-bit Windows.

 

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