voltage stabilizer

Hi all I'm experiencing voltage fluctuations in my building from past couple weeks, hence would like your kind suggestions on how to safeguard PC (1000watt PSU) from voltage fluctuations. Is there any voltage stabilizer for PC? Not necessarily looking to buy UPS but if it's the last resort...

So the market currently has a voltage stabilizer targeted towards each home appliance. Like This is for TV , This is for Washing machine, This is for AC, This is for fridge and This is for PC. The whole thing feels gimmicky. I am shifting and will be getting every home appliance and the area is...

The voltage stabilizer attached to my AC sometimes work, manytimes not. I took it to a repair man and he checked it, he said it was okay. At home, it gives same output for input, it does nit increase or decrease it. But sometimes it works for 5 minutes. I dont know what is the problem. I've got...