When I attempt to start up my computer, I see nothing on the screen. This includes the POST or operating system loading screen. The backlight doesn't switch on either.
I have tried to press F2 shortly after turning the computer on to see whether it is simply a display problem, but I do not hear the beep from the speakers associated with entering the BIOS.
However, when I insert a disc, I can hear it spinning in the drive and the computer attempting to read it. I am certain power is getting to the computer.
When the problem arose, I was upgrading the original 2GB RAM to 4 GB using two Kingston 2 GB DDR2 SODIMM modules. After I installed the new modules, the computer failed to start Windows (I did see the POST in this case, it simply frose on the OS loading screen). After several attempts at starting in safe mode (the computer restarted after loading the files), using startup repair (the same) and the memory diagnostics tool (simply frose at 0%), I removed the replacement RAM and replaced the original modules. The computer again functioned correctly.
I then attempted to insert one of the new modules with one of the original modules. This was successful, and my computer (BIOS and Windows) reported having 3GB of RAM installed. I ran several resource-intensive applications which varified that the extra gigabyte was actually being used.
The problem I described above arose when I next attempted to start my computer. The computer is an Acer Aspire 2920Z dual-booting Windows Vista SP1 and the Windows 7 beta, both 32-bit editions. When I talk about Windows above, I mean Vista. Whilst swapping the memory modules, I followed instructions on Kingston's website to the letter.
I'd really appreciate any assistance.
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