My HP ProDesk G4 will not switch on

[JHF1]

Hi all,

Please can someone help.

I changed my BIOS boot order so that it would boot from my DVD drive

I changed it back but now it will not boot up.I get 5 beeps with a red light at the power on switch and 7 beeps with a white light at the power on switch

I have attempted to reset the CMOS but I am not sure if I am doing it right

Any ideas what I should do next

[Lil_Boy_Blue]

Hi

Hopefully one of these documents will cover (and solve) your problem...
https://support.hp.com/ca-en/document/c00042629
https://support.hp.com/us-en/document/c02693833

"I get 5 beeps with a red light at the power on switch and 7 beeps with a white light at the power on switch"

Doesn't seem right.

https://support.hp.com/us-en/product/hp-prodesk-400-g4-small-form-factor-pc/15292380

http://h10032.www1.hp.com/ctg/Manual/c05381694     Page  102