PUM Detected in Malwarebytes Scan

Over the past week or so, every time I run a Malwarebytes scan it has reported a non malware threat, as follows:-

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 335170
Time Elapsed: 21 min, 31 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 0
(No malicious items detected)

Registry Values: 0
(No malicious items detected)

Registry Data: 1
PUM.Optional.NoDrives, HKU\S-1-5-21-61187059-1334297750-2548552277-1000\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER|NoDrives, 1, Good: (0), Bad: (1),,[6c1957118920d95d0d4e521aea1927d9]

Folders: 0
(No malicious items detected)

Files: 0
(No malicious items detected)

Physical Sectors: 0
(No malicious items detected)


(end)

I am using Windows 7 Service Pack 1 on a 64 CPU laptop. On each occasion I have clicked the Remove button and Malwarebytes has sent the entry to its Quarantine section.

I've run my anti-virus program (ESET Smart Security) and CCleaner and both report no issues or threats found. I've also run the command prompt sfc /scannow and that simply reported, "Windows Resource Protection did not find any integrity violations."

Can anyone tell me if I need to be worried about the Malwarebytes scan result, or will it be safe to leave things as they are.

Any help you can give would be most appreciated.

You're fine. MalwareBytes can frequently pop thousands of hits in the registry, it's impressive you only had one. Don't worry about it, MBAM cleaned it anyway.

Thank you so much for your reassurance, Darren. I was getting really worried about the wretched thing and was at a complete loss as to what to do about it. Again, many thanks.