touchsmart 310 that won't power on

[DennisRUS]

HP Touchsmart 310-1126 won't  power up.   When I hit the power on button it flashes three times but nothing happens.   So far I have replaced the power supply and motherboard,  same thing.   I  have a new CPU on order but was thinking that even if CPU is bad,  should not the fan still be working?    When I hit the power on button,   the green light at the power plug in goes a little dim and the fan tries to move but only for about a quarter turn.    Hopping someone out there can shed some light on this.

[Jeet_singh]

Hi @DennisRUS,

Welcome to HP Forums, this is a great place to get support, find answers and tips, Thank you for posting your query, I'll be more than glad to help you out 🙂

As I understand the computer is not turning on your HP Touchsmart computer. I'll try my best to help you with this,

To provide you with an accurate solution, I'll need a few more details.

When you try to turn it on, do you hear the fan running? Or do you get any beeping noises/blinking lights? 

Have you made any software or hardware changes made on the PC?

Was there any update/reset interrupted recently?

In the meantime, let's try these steps here:

Please attempt to follow the steps suggested in the guided troubleshooter - No Power or No Boot Troubleshooting - Click here

For more details, please go through the steps for Computer does not Start - Click here

I hope this helps. Let me know if you need any further assistance. I'll be more than happy to help.

Keep me posted,

If the information I've provided was helpful,

give us some reinforcement by clicking the solution and kudos buttons,

that'll help us and others see that we've got the answers!

Good Luck.