cannot restart computer and will only shut down

[ProfessorU]

This means it's not a UPS problem. One down!

It might not even need a BIOS update, just a BIOS change. Of course, you should have the new drivers and firmware anyway, so it's a good idea to check the manufacturer's website.

There are several standards for power and power management features in computers. Most older motherboards like to keep the control, while the newer Windows OSes also want control. I would check your BIOS "power management" settings and try it on "ACPI" or disable it altogether. One or the other will probably work. Disabling it might cause you to lose functions like "standby", "sleep" and "hibernate" but the basics, like off and reset, should still work.

[BGlied]

very insteresting, I just searching for this issue and come out your solution, but it was long time ago,, time changes,,, now same problem on vsita OS, motherboad already have latest bios version, and there is not much changable field on bios on this model HP tx 1000. when it auto restart, instead of restart laptop, it shutdown. and sometime when I press power,, it is not start up right away, it shows all lights, but nothing on screen,, I have to cold start a few time... is there has easy fix on this type issue on this model of laptop,, thank you..