date and time changes nearly every time windows starts and sometimes t

Hi, I use Windows 7 64 bit, my problem is nearly every time (let's say 2 of 3 times) i start windows, the date and time changes. Mostly for 4 or 5 days later but sometimes a specific date: November 10th… Also time changes randomly. Another problem is sometimes tray icons disappear, the tray remains as big as there are several icons there but the icons don't appear and nothing happens when i click on it. Any help?

Sorry to hear about you problems. Sounds like you may have picked up some kind of malware. To find out, go to the Spyware / Malware / Virus Removal forum, read the info there and follow the posted directions. Once you receive a clean bill of health, come back here if you have any additional questions or concerns or it turns out not to be a malware problem.

Please be patient as that is a very busy area. If you do not receive a response in 3 days, post a message here: What To Do If You Have No Response In 3 Days?

You may also want to replace the CMOS battery if you computer is a Desktop system and Not a laptop (laptops are much harder to replace usually). It's a CR2032 battery about the size of a quarter. Yo replace, power off the computer and unplug the power cord. Remove the side of the case and look for the battery. Newer computers usually have it in an easily accessible place and since you're running Windows 7 you probably have a fairly new one.

A dead or dying CMOS battery can cause date and time to be messed up but would not affect icons on the Taskbar.

Thanks for the reply, I will post topic at the malware forum, however i don't think it's a spyware/malware problem because i have this problem since the first few days i use this computer.

How old is the computer? Did it come new with Windows 7 or did you upgrade?
Is it a laptop or desktop system?

If desktop, try replacing the CMOS battery. This can also be a problem with laptops but it's much harder to replace it.

It's a laptop and just a few months old, with Windows 7 installed.

Okay, not a CMOS battery problem then. Hope the malware folks can help.

there are no infections… so what may cause this problem?

Reason for edit: Add link to malware thread: http://forums.whatthetech.com/index.php?sh…=119183&hl=

What is the make and model number of your computer?
Desktop or Laptop?

Please Run the PCPitstop Full Tests, here: PCPitstop Full Tests

You must use Internet Explorer as it needs to install an ActiveX program.

Note: Vista/Windows 7 users with UAC must first Right-click IE - Select "Run as Administrator"

If you haven't already registered, Click - Sign up now! (left hand column in User Login)

Register and create a password
Accept the ActiveX component to allow your machine to run the Full Tests
Registering and accepting the ActiveX are both SAFE and FREE.

The Full Tests take less than 5 minutes for most machines.

Once you have your Results, please post the URL (the http:// stuff) back here into this thread for review.

Note: Vista/Windows 7 users, please close your instance of IE "Running as Administrator" after you are finished reviewing your Results.

Caution: During the testing of Video Adapter, a variety of patterns, shapes, colors and text are “flashed” onto the users monitor screen. In the many thousands of daily uses of the PCPitstop Full Tests over several years, two individuals who suffer epilepsy experienced discomfort and temporary dizziness when viewing the flashing patterns.

If you know that you are susceptible to photo driven seizure, please look away from your screen during the Video Adapter testing sequence.

Note: The PCPitstop Full Tests Results is a free service, but is supported by various paid product advertisements for utilities that "could" remedy the OP's problem.

Since this site is a "free-help" forum, we do not recommend or endorse purchase of automated utilities, and will assist you in manually correcting any problems and settings necessary to optimize your machine's performance. Ask your questions here. We'll help you walk through any necessary steps.