computer shuts down and reboots insted of giving backup with UPS yes it is conected to the backup

[thingom pari]

help! Computer shuts itself off no backups the UPS is an APC 700va and the powersupply is 650 watt from corsair

 

[rgd1101]

it not about the psu watts. what are you connecting to the UPS and what is your computer spec?

 

[jsmithepa]

As typical, you have provided no near enough information for a proper response.

1. Does UPS shut off along with the PC?
2. Does PC immediately shuts off when power out with no delay whatsoever?
3. Does PC perform a normal "Windows Shutdown" or does it immediately goes black like yanked power cord?

1. Bad UPS or underpowered UPS with no battery reserve. What's the UPS Load% during normal operation?

2. Under size battery, no enough to even keep power for seconds and/or UPS shutdown timer too short.

3. If "Windows shutdown" = UPS shutdown timer too short. If sudden dead, UPS bad/underpowered.

 

[thingom pari]

no just the PC
my specs are, amd fx 8350 8 gigs of corsair ram 4Gb each msi 970 gaming mobo, r9 270x ,corsair h75,1 tb hd WD and 500 GB hdd, corsair 650 watt psu dont remember the series i peeled of the side stickers

 

[thingom pari]

and the pc shuts down for no reason while gaming also i checked the temps all are normal cpu is around 26c on idle on load 45 max and GPU is around 70 and yes the computer shuts off like the power cord is pulled and restarts automatically

 

[rgd1101]

So did the power went out? or just your system shut down when gaming?

 

[jsmithepa]

and the pc shuts down for no reason while gaming also i checked the temps all are normal cpu is around 26c on idle on load 45 max and GPU is around 70 and yes the computer shuts off like the power cord is pulled and restarts automatically

The good news is, you don't have a thermal shutdown. The bad news is, thermal shutdown would be easier to diagnose and fix.

At this point am going to say you have under-powered PSU or bad PSU.

A deficient powered PC is not going to be saved by ANY UPS.

 

[thingom pari]

its a bit of both if the power goes out most of the times and while gaming it happens completely random like 2 or 3 times a day, so do i need to change the psu? or is there any way to check the psu before i buy one,my pc was fine when i built it, been using this pc for 1 and half years now and i more thing it gives backup sometimes but its once in a blue moon as for now

 

[thingom pari]

http://prntscr.com/8o3yv6 guys are these voltages normal?