Member Avatar for hasbuy

im trying to upgrade the ram in my old pc and if I take the original ram stick out and replace it with a better one, it wont boot up I power it up and the pc just loades up with a black screen and doesn't go beyond there? why cant the pc boot without the original ram? and how can I fix it?

regards
hasbuy

Edited by pritaeas because: Moved.
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OP described a classic POST failure after swapping RAM. Two simple causes often appear together: a module that the motherboard or BIOS does not support, and a seating/slot issue. was on the right track about the physical fit, and was right to flag compatibility. The checklist below walks through safe, verifiable steps to narrow the fault and resolve it.

  1. Power down, unplug, and ground yourself. Inspect module contacts and DIMM slot for debris or bent pins.
  2. Find the board manual to identify the correct single-stick slot for testing (some boards require a specific slot for one module).
  3. Test the original stick alone to confirm the board still POSTs. If it does, test the new stick alone in the same slot. If the new stick fails, it is either defective or incompatible.
  4. Confirm exact specs: DDR generation (DDR2/3/4), form factor (DIMM vs SO‑DIMM), voltage, ECC/registered vs unbuffered, and per-slot capacity limits from the manual or a compatibility tool such as the Crucial Advisor.
  5. Use a tool like CPU‑Z to read SPD/part numbers from working sticks and compare.
  6. Check motherboard POST LEDs/beeps for diagnostic codes.
  7. BIOS updates can add memory support, but apply only if the update specifically lists memory fixes and follow the vendor procedure.
  8. If a new stick fails in all slots after these checks, request an RMA.

Handle modules carefully to avoid ESD damage.

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Member Avatar for ronaldfat.officer

insert it into it's slot tietly

Member Avatar for rubberman

You need to be sure the new RAM is compatible with your system.

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