I tried to upgrade both my RAM Chips from factory 2x2gb to 2 x 4gb 800Mhz PC2-6400 and LOST TOP Slot

[naviscan]

I tried to upgrade my HP-dv7-3165dx RAM, after upgrading to Win-10 pro x64. (BIOS v.F15/2010).

Thought I knew what to do, antistatic and edges, after removing my factory 2x2gb RAM, replaced carefully both chips with brand new 2 x 4gb PC2-6400, 200pin SODIMM.

With battery and all out, I restarted PC and BSOD with 2 flashing LEDs (Caps Lock, Num Lock) flashing forever.

I removed one chip from (secondary) TOP slot, and rebooted normally, with only 1 chip (4gb) in lower slot...

Then I tried replacing my old chips, and same BSOD froze my BIOS CMOS startup ...

Now, apparently, I lost my Secondary (Top) mem. slot, since no matter what chip I use in it, the BIOS would freeze, and still no matter what chip I put in Primary (bottom) slot, the BIOS would start only with one mem. chip in primary !

To add insult to injury, my Win-10 installation quit on me, full of errors, until I recovered a recent backup image from an external USB drive ...  ooooffff !!!

Now, is there a solution to regain my RAM chipset so I could use at least my old memory in both slots ?

What gives, folks?

"naviscan"

[banhien · Accepted solution]

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@naviscan wrote:
... Now, apparently, I lost my Secondary (Top) mem. slot, since no matter what chip I use in it, the BIOS would freeze, and still no matter what chip I put in Primary (bottom) slot, the BIOS would start only with one mem. chip in primary ! .....

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Hi,

Sounds during the process, you actually caused physical damages for one RAM slot. I can help you with that but please to check all pins, connectors to make sure no damage to them. One more question: did you wear static trap when touching to internal machine ?

Regards.

[naviscan]

Thanks for the hint, BH!

Yes, I wore antistatic wrist, grounded, and Yes, I checked with a magnifier all pins in upper mem slot.

I found no sign of physical damage thru all wires.

CMOS / BIOS would freeze BSOD when putting only one SODIMM in Upper slot, or in both slots.

BIOS and OS would start only when Lower slot is in use.

What else?

naviscan