[SOLVED] PSU Fan is making painfully loud noise

[SawmMawia]

When i turn on my pc,the psu fan starts to spin and makes a painfully loud to hear sound,and if i like smash the table,it goes normal for a while and gets loud again.
Help

 

[JohnBonhamsGhost]

if it is actually the PSU fan and "knocking it" resolves the issue;
if under warranty, contact the manufacturer and have them replace it.
if not under warranty, you can try pulling out the fan and oiling the bearings.

 

[terry12]

Your laptop needs to be cleaned up. I also had a similar issue and after cleaning the laptop totally, the problem went away.