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.

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

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.