No beeping, only the cpu fan rotates at load and screen is blank. No post either.

My MSI K8NGM2-IL mobo had Transcend 256mb ddr400 ram 2.5-3-3-8, model no. TS32MLD64VF working fine. I transferred the memory to my Intel 915gav mobo already having Hynix ddr400 3.0-3-3-8. After few hours of system up, it gave BSOD with PFN_LIST_ERROR.
Now the system shows weird errors at boot up. It auto-restarts past bios.
Sometimes locks at bios screen. Sometimes boots and before logon screen gives different bsods each time with following different errors

Bad_Pool_header 0x00000019
IRQL_Not_less_or_equal 0x000000A
Bios is not ACPI compliant 0x000000A5
0xC0000005
C000021A Session manager error 0xC00002bc
0x0000008E (0xC00005,.......) win2k.sys error address bf801ceb base at BF800000 Datestamp 48025T2a

These errors are indeed memory related but the transcend stick is working fine on msi mobo with no memtest error.
Also Intel mobo memory slots are not faulty, tried with other ram sticks.
It has 4 slots 2 each of 2.5v and other two of 2.6v. None seem to work.
Once with relaxed timing could boot into windows but withing 5 mins gave back bsod. This single transcend stick when used alone can't post to bios screen even. Now only the cpu fan rotates at high load.

Please help.

Take that ram out.....the 256....

when you tell the doctor that it hurts when you do this....don't do this.

Just because it worked in your MSI board, does not mean it will work in your new board. And seriously, a loss of 256MB is not even worth the effort to keep it.

Just my 2 cents