please help my pc is very slow what should i upgrade ?

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Commendable
Dec 20, 2016
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i have had my pc for around a year now i did overlock my cpu for 2 days to 4.2ghz a month or two ago but now my pc has become very slow and hoit please help my specs are Operating System
Windows 10 Home 64-bit
CPU
Intel Pentium G3258 @ 3.20GHz 98 °C
Haswell 22nm Technology
RAM
8.00GB Single-Channel DDR3 (9-9-9-24)
Motherboard
ASUSTeK COMPUTER INC. H81M-C (SOCKET 1150) 11 °C
Graphics
HE225DPB (1920x1080@60Hz)
4095MB NVIDIA GeForce GTX 1050 Ti (ZOTAC International) 24 °C
Storage
931GB Seagate ST1000DM003-1ER162 (SATA) 28 °C
Optical Drives
TSSTcorp CDDVDW SH
 

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Commendable
Dec 20, 2016
19
0
1,510


i have tried takeing out the cooler and puting it back in but no diffrence at all
 

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Commendable
Dec 20, 2016
19
0
1,510


it is the standard intel cooler and i did restore my bios to factory settings after ovcerclocking