Windows 7: Computer freezes on startup before beeper posts

i start up my computer and it freezes at my load up screen (It shows F2 for BIOS and F12 for boot menu etc.)



i am luckily able to enter the BIOS if i press key quick enough before the computer freezes a few seconds after.

i got lucky and my computer functioned one time, i am running System repair on the computer (Windows software)

After my issues i checked my RAM moduels, i removed them and put them back in ETC, i can run the memory test x86 (I have the CD and i can boot from my optical drive) if required but i doubt this issues is memory related, plus checking memory is long and tedious

As far as i know, the most recent changes made to my computer were changes to the registry with the software CCleaner however i am unsure this is what caused my freezes to start.

no i didn't backup my deleted registries, this is the first time i encountered a problem after cleaning registries.

i have not received any error codes so far.

anyone got any experience with this? i never had freezes before hitting the windows login screen before, my ability to fix this is limited.

If it freezes on the screen where you access the BIOS, then it's likely that this is a hardware problem.
Please run these free, bootable diagnostics: Initial Hardware Diagnostics

If you've already run a memory test, please let us know what test you ran and for how long (how many passes) that you ran it.

I am confirmed that my BIOS doesnt fail, what i meant was that it was difficult to get into it due to the freeze occuring so quickly after booting (my freeze happens just before i have the beeping post) so navigation with the start up screen was tricky (Mashing F2/F12 keys from start)

also i know 100% its not malware

If it freezes that early, then it's likely that it's a hardware problem.
Does it act worse when it's cold, or when it's warmed up?

Try the hard drive diagnostic to see if that's causing problems: Hard Drive Diagnostic Procedure

is this a laptop or desktop? and have you tried resetting the bios by unpluging your computer removing any batteries that may power it and removing the cmos battery. refer to your motherboard instructions for other ways to reset your cmos using jumpers that may be on your board.

also make sure your heat sink is properly snug and tight on your cpu. they do come loose from time to time. it happened to me once.

this post and another are so similar that im going to post a link to the other on each one to help boost the solution to the problem.

Computer turned off suddenly, now doesn't turn on

Okay after a new tests i found out some interesting things:

One time when i booted up my PC, it ran perfectly fine without issues only for that boot up.

Another time it failed to start with the message "Boot mgr is corrupt the system cannot start"

Another time i had started the computer and it took 20 seconds for my screen to turn on responsive and my computer's power button (i attempted a turn off by holding it down) was unresponsive, very new to me!

and lastly one time i booted my PC, it loaded just fine but explorer.exe failed to load up as well as other start up items such as my anti virus.

? does this mean hard drive is screwed? most likely right? (just wanna hear what you guys think before i run the tests from Initial Hardware Diagnostics).

i fixed my problem, it was a optical drive.

funny because my DVD optical drive was not connected with power, only the data cable was in and for some reason this caused the problem.

ill wait a few days to see if any other issues arise so i can confirm its fixed, then ill mark as solved.

my brother had a similar issue like this, exempt it was his data cable and the computer kept blue screening.