Question Abrupt Reboots when closing applications on UPS backup

[G. Moriarty]

Hello!
I am facing an issue with my computer. If the PC is on UPS backup power, and I try to close any memory-heavy applications such as an Android simulator or Opera GX browser, the PC just turns off abruptly and reboots. However, it doesn't happen when not on UPS Power backup. Is that because of the PSU or the UPS...or is it because of anything else? What should I do?

 

[rgd1101]

full system spec? include brand and model of the psu

and what the ups?

 

[G. Moriarty]

full system spec? include brand and model of the psu

and what the ups?

PSU - Corsair VS450 (450W)
Motherboard - Gigabyte H110M-S2-CF
CPU - Intel Core i5-6400 2.7 GHz
GPU - Nvidea GT-710 2GB DDR3
RAM - SK Hynix 8GB
UPS - FSP FP600

The PSU, Motherboard and the CPU are 5 years old,
UPS was bought just a few weeks back.
RAM was changed to a new one 1 year back
GPU was bought 2 years ago

 

[mdd1963]

IF it does not ever happen when on UPS power, I'd say you've solved it...