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Windows 7: Weird mouse behaviour


15 Jun 2013   #1

Windows 7 Ultimate 32bit
 
 
Weird mouse behaviour

Posted this in several Windows/Tech forums but have been unable to resolve so far. If anyone here can help, I'd be most grateful.

Been having a weird problem with the mouse for a few weeks. Happens several times a day.

When I go into any application where you (use the mouse) to select one item, several random items are selected all at the same time. In Thunderbird, for example, selecting one folder, selects 2 or 3. In explorer, selecting one item highlights many more; and when I click on Firefox (to re-open the window) it kicks off another instance of the program; clicking on a pinned tab (in Firefox), doesn't open it but protects/locks it instead.

Closing & restarting the progs fix it, but it affects every running program, so I usually end up logging off and back on.

Swapped the mouse & tried a different USB port. It can't be the keyboard (I hope) because logging off/on rebooting always solves the problem until the next time.

Any ideas as to what's causing this ??

My System SpecsSystem Spec
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15 Jun 2013   #2

Windows 7 Ultimate x64
 
 

Must be the keyboard.

Have you try to change your keyboard?

BTW, welcome to Sevenforums
My System SpecsSystem Spec
15 Jun 2013   #3

Windows 7 Ultimate 32bit
 
 

Thanks.

Why do say it must be the keyboard ?? I only ask cos when I reboot or logoff/on it's OK till the next time - maybe 2 hours or maybe 8 hours. I'm using the keyboard in the meantime (i.e. before it happens again). It is the only piece of hardware I've haven't yet replaced.
My System SpecsSystem Spec
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15 Jun 2013   #4

Win8/8.1,Win7-U64, Vista U64, uncounted Linux distor's
 
 

I suffered intermittent mouse problems since building my new box. I had a MS 5000 wireless usb, mostly intermittent jerky movement and sometimes weird "click" issues. Some times it would be great, other times terrible. I spent weeks trouble shooting. I finally changed to a Logitech G500 cabled usb mouse and it's been perfection for the past several weeks.

Wireless interference problems (position of the Sun, Moon and larger Planets) is the conclusion I draw.
My System SpecsSystem Spec
15 Jun 2013   #5

Windows 7 Ultimate 32bit
 
 

Mmm...OK I'll look into the keyboard (not literally !!). Thanks.
My System SpecsSystem Spec
15 Jun 2013   #6

Windows 7 Ultimate SP1 (64 bit), Windows XP SP3, Linux Mint 17 MATE (64 bit)
 
 

Your keyboard might have a sticky "Shift" key.
My System SpecsSystem Spec
15 Jun 2013   #7

Windows 7 Ultimate 32bit
 
 

lehnerus2000 - I believe you have hit on the nail on the head. I was dismissing the keyboard out of hand - but the SHIFT key IS very sticky & when I press it in conjunction with the left-click mouse it does exactly what I describe above.

I will definitely replace it now. Others (in other forums and here) have said replace the keyboard, but it was only when you mentioned the SHIFT key that it all fell into place.

Give me a week & I'll report back with my findings.
My System SpecsSystem Spec
15 Jun 2013   #8

Windows 7 Ultimate SP1 (64 bit), Windows XP SP3, Linux Mint 17 MATE (64 bit)
 
 

I had that problem with my old keyboard.

One of the "Shift" keys would stick (the other one was OK), which would cause all sorts of weird behaviour (e.g. launching multiple files and programs, opening links in new windows, etc.).
My System SpecsSystem Spec
16 Jun 2013   #9

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by rigsby View Post
Thanks.

Why do say it must be the keyboard ?? I only ask cos when I reboot or logoff/on it's OK till the next time - maybe 2 hours or maybe 8 hours. I'm using the keyboard in the meantime (i.e. before it happens again). It is the only piece of hardware I've haven't yet replaced.

Like everybody said... maybe you have a sticky "Shift" key in your keyboard.
My System SpecsSystem Spec
16 Jun 2013   #10
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

You can carefully pry off the Shift key cap and see if there's a clump of dirt, spilled Coke, or french fry and clean it off.

A cotton swab with moistened with some rubbing (Isopropyl) alcohol can be used to clean up any garbage found. A very tiny drop of light oil on the key stem can help free it up too.
My System SpecsSystem Spec
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