Computer won't start after shutting down!!!

[bahval5]

Almost every time I turn off the computer and want to turn it on It won't start, then I unplug the power cable and wait for some time(about 2-5 minutes) and turn it on. Then when it turns on you can see an error message "There is no keyboard device found". Then I unplug the keyboard and plug it again, only after restarting computer It starts. I tried both updating BIOS to newer version and changing the keyboard, but didn't help. Can anybody help me with this problem?

 

[oscaryu1]

What are the specs (specifically system and PSU) of your computer?

 

[bahval5]

My specs:
MB: ECS C51GM-M
CPU: AMD Athlon 64 x2 +4400 2.3 GHz
HD: Seagate Maxtor 160 GB 7200 (SATA)
DVD RW: lite on DVD Burner
DDR: Kingston 1 Gb

 

[scuzz21]

Could be the battery depending on age of machine. Check or even replace cords, power supply.

 

[oscaryu1]

My specs:
MB: ECS C51GM-M
CPU: AMD Athlon 64 x2 +4400 2.3 GHz
HD: Seagate Maxtor 160 GB 7200 (SATA)
DVD RW: lite on DVD Burner
DDR: Kingston 1 Gb

PSU specs? At least wattage and brand...

 

[bahval5]

My PSU model is ATX-400W P4
(One more thing I lately observed - when I turn off my computer the lights of the scroll button on the mouse gets red, after I reconnect the power cable it is still red and only after 2-5 minutes it turns blue -- this is a signal for me to turn the computer on ) )

 

[Vizy]

bad psu.

 

[oscaryu1]

Not so fast Vizy. It could be, but I personally think it is a unsufficient PSU... what is the BRAND?

 

[bahval5]

The only thing I found on the label is: ALOWE Switching Power Suply ATX-400W P4

 

[ChrisW92410]

i had the same problem with a off brand PSU then i bought my rosewill and seriously never had a issue again...and to just be sure i also changed my mobo battery