It looks like you have done most of the main troubleshooting. 
#1
Screen locks up and screech sound from speaker. is commonly caused by incorrectly configured system settings or irregular entries in the Windows registry. This error can be fixed with special software that repairs the registry and tunes up system settings to restore stability
If you have Screen locks up and screech sound from speaker. then we strongly recommend that you Download (Screen locks up and screech sound from speaker.) Repair Tool.
- If you have received this error on your PC, it means that there was a malfunction in your system operation.
Common reasons include incorrect or failed installation or uninstallation of software that may have left invalid entries in your Windows registry, consequences of a virus or malware attack, improper system shutdown due to a power failure or another factor, someone with little technical knowledge accidentally deleting a necessary system file or registry entry, as well as a number of other causes.
The immediate cause of the “Screen locks up and screech sound from speaker.” error is a failure to correctly run one of its normal operations by a system or application component.
#2
Scratching noises and freezes are definitely not good signs for the drive’s health. It could be having problems that chkdsk is not able to detect.
What kind of make and model is the drive?
I would suggest you using the manufacturer’s software (if there is such) to check the drive’s health and also run SMART and post the results here.
Make sure also that the drive is not being affected by anything else in the box.
Post back! 
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