This is the first time i am posting anything on tom's forum, so bear with me if a little out of normal etiquette here.
Around a week back when i soft-rebooted by hp slimline s3750t system, i did not get the standard BIOS screen but just a "-" blinking on the top left corner of the otherwise blank screen. So, i hard rebooted the system and this time nothing came up on the screen, not even the "-" blinking . I could hear the fans spinning and hard drive spinning. So, i tried hard rebooting again for around 4 times but the same result all the time. When i hard rebooted the 5th time, nothing happened at all. No fans spinning, no LEDs blinking, nothing. System was completely dead.
So, i googled around a little about the issue and most of the suggestions online pointed me to bad PSU. Having a tinker mentality, i went ahead and tried to debug the PSU. I read somewhere that if i short the "green wire" and the "black wire" of the 24 pin connector, the PSU fan should start spinning. That worked. I also measured the voltages on the pins and they matched the specs. This gave me enough courage to connect all the components together and short the pins. The system powered up with the fans spinning and hard drive spinning but no video.
Then, i googled around a bit more and read somewhere to remove RAM and see if i hear the beeps. I removed the RAM and i did hear the beeps. As BIOS performs this test, i assume the BIOS chip is ok. But i am still not sure if CPU or mobo is bad.
I also had my suspicion on GPU as there was no video. So, i thought of removing the GPU card and using the onboard video instead. But when i removed the GPU, i noticed that the fan on the GPU was cracked. The casing holding the fan was dangling loose because of a broken pin.
So, my question is whether a broken fan on the GPU ( implying GPU chip might have fried ) cause the symptoms i detailed earlier. In addition, does the tests i performed tell that mobo and CPU are good or do i need to run other tests ?