i7-4790K Troubleshooting slow PC

Rabbit33

Commendable
Nov 26, 2016
3
0
1,510
I've noticed over the last 3 weeks my PC slowed down while doing general admin (webbrowse, google doc). Today I had some free time and fired up Prepar3D flightsim and was experiencing 6+FPS instead on my normal 35-45FPS. Things I noticed and did so far....

Check Temp - Idle Temperature 23c - under load 40c

SSD with OS was near full - I removed photos that download from the cloud unexpectedly over the past few months and now have 40% of the SSD free.

Cleaned registry with CCleaner

Updated to latest AMD driver

Test P3D again and had same results of 6+FPS

Ran 3dMark - graphic score (9865/42FPS) physics score (2027/5FPS) combined score (1244/5FPS) - overall Fire Strike ver1.1 rank 4340

Ran CPU-Z validated http://valid.x86.fr/fqwh9r single thread 363, multithread 1534

any thoughts, guidance before I shell out $250 for another i7-4790K -THANKS

System Specs
- CPU Intel® Core™ i7-4790K CPU @ 4.00GHz
- MB ASRock Z97 Extreme4
- BIOS American Megatrends Inc. P1.30 (05/23/2014)
- Memory 8mb 2x Corsair 4mb DDR3-1337
- GPU 2x Radeon R9 270 2mb
- SSD OS Crucial M4 128GB, SSD storage Crucial MX300 750GB
- HHD WD 1003 1tb
- OS - Windows 8.1 (6.3) Home 64-bit


 
Solution
Open up task manager and look at CPU Usage. If it says it's above 90% when your computer is hardly running anything then that might be the issue. To fix it you need to go into your registry and disable a specific service called ndu.svc. My computer was acting ridiculously slow when all I had open was a couple tabs of Chrome, and when I looked at CPU Usage it was at 99%. Disabling that service fixed it for me and allowed me to play games again.

Colethelion321

Reputable
Feb 3, 2016
449
0
4,960
I strongly doubt it's the CPU. Here are something's to do:
1: virus scan (avast or windows defender)
2: malaware bytes scan
3: registry, defrag, and any other cleaning utility's you have like disk cleaner.
4: if all else reinstall windows, if you have data you don't want to lose then use another drive or backup the info.
 

Rabbit33

Commendable
Nov 26, 2016
3
0
1,510


 

Rabbit33

Commendable
Nov 26, 2016
3
0
1,510
Thxs
Had used Avast scan, with no virus or malware detected. Registry cleaned with Ccleaner. I've never done a defrag on my SSD, common theroy is it's not needed and also bad due to high write frequency. The OS seems very stable so I'm not sure what reinstalling windows would do. Can you elaborate on your last two suggestions...defrag and OS reinstall?? Thxs again
 

Mjgamer

Reputable
Jul 16, 2015
19
0
4,520
Open up task manager and look at CPU Usage. If it says it's above 90% when your computer is hardly running anything then that might be the issue. To fix it you need to go into your registry and disable a specific service called ndu.svc. My computer was acting ridiculously slow when all I had open was a couple tabs of Chrome, and when I looked at CPU Usage it was at 99%. Disabling that service fixed it for me and allowed me to play games again.
 
Solution