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i'm have sony vaio pcg-z1va ,but ram on board dead. i add new ram 512 but bios show 1GB then runing 15 minutes it reset.Anybody help remove old ram on board,thanks:eek:

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Consolidated, practical guidance for , and (and in response to and moderator ): the goal is to isolate whether the fault is the added SODIMM, the motherboard (soldered/onboard chips), the memory slot, or the chipset, then choose a repair route. The BIOS briefly reporting 1 GB before the machine resets fits a hardware instability pattern, so follow a methodical, safety-first approach.

  1. Run an independent memory tester (bootable MemTest86 or Windows Memory Diagnostic) and let it complete several passes; note whether errors appear immediately or after minutes and which addresses fail.
  2. Try configuration isolation: a) remove the extra 512 MB and boot on the suspected onboard memory alone; b) boot with only the added 512 MB (remove onboard if the board allows it or simply remove the other module if removable); c) try the 512 MB in any other slot or try a known-good module. The pattern of which configuration is stable vs failing tells you where the fault lives.
  3. Check BIOS reports and any available update from Sony before wide testing (only if you can apply an official BIOS safely). Look for memory-recognition anomalies or chipset options that affect RAM.
  4. Do a visual inspection with power removed: a SODIMM socket is removable; if you see DRAM chips soldered directly to the PCB with no socket, the memory is onboard (not user‑replaceable). Photograph what you find for parts searches.

If the onboard chips are failing, practical options are replacement motherboard/donor board or professional board‑level repair (chip replacement or reflow). Desoldering or attempting chip replacement at home is high risk. Always remove AC and battery, ground yourself, keep track of screws, and accept that for an older Vaio the cheapest fix is often a used motherboard or donor laptop rather than expensive rework.

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Member Avatar for 'Stein

Stop bumping your thread. Once more and I will close it.

Moved to correct forum.

Member Avatar for jenlai1345

Hi,

I have the exact same problem - having a BAD onboard ram (vaio z1va).
Anyone that could help???

Thank you very much!!!!!!

Member Avatar for shamsul haque

Hi
I am having also same Sony Vaio. Giving same problem. Built in RAM is giving trouble. i can't use my laptop every moment hanging and blue screen. Please help with the solution.......

Member Avatar for jingda

Since you already diagnose that the built in ram is giving you trouble why not replace it with a new one or change the ram stick to another slots. There are always two slots in a laptop.

Member Avatar for shamsul haque

Since you already diagnose that the built in ram is giving you trouble why not replace it with a new one or change the ram stick to another slots. There are always two slots in a laptop.

Can i unplug only the built in ram from the motherboard?? where i can find this RAM. without built-in RAM if i use extra RAM slot will it work??

Member Avatar for jingda

You have to open your laptop case and find the ram slot. There are two slots together, there are two latches at the side of a slot. Release it and slide the ram stick out and you can replace it.

Do not replace your ram if you do not know how to do it. Consult a friend who has experience in it.

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