Pc starting problem

Registration date
Tuesday April 25, 2017
Last seen
May 12, 2017
- Apr 29, 2017 at 01:12 PM
Hello ,
3weeks ago i have install windows 10 transformation pack 7.0 on my Windows xp desktop and it was worked fine but yesterday i configured a little and than every time i play hd videos my CRT monitor shows frequency out of range and evrything turn of except "cpu fan, hard drive, and cpu power on buton light. than i disconnect the main power wire and it happen every times when i star my pc. Than and i disconnect the power wire. And than i was thinking that this is the problem of BIOS so i want reset bios setting to default but this not work because when i press del key to go bios settings my cpu hang and now when i press power button only the "cpu fan, hard drive" turn on and the cpu power on button lights up. Then I was thinking the ram position problem and i change raposition to a another slot that not worked than I've remove the ram and start pc and my motherboard didn't sound any beep than i think the power supply problem but i don't know. So what should i do now.