I have an HP computer that wouldn't boot. I was sure the motherboard is malfunctioning as installing another power supply has the same issue. That being won't power on and a blinking PSU light. This being said I found the below video and figured why not. After following the instructions in the video the machine now boots. Odd. Curious to know why this is.
The CPU fan was very noisy so I replaced it with an after market fan and heatsink. The problem is the fan will move at start up then stop. Almost as if the system isn't strong enough to start the fan. If I move the fan with my finger to get it started the system will run fine. If the system is rebooted all is well. However if I shut the system down then back on the fan must be manually push started to work.
Thanks in advance.