Hello,
Before the pop-ups started, my laptop suddenly slowed down and I was unable to shutdown my laptop. After some time the laptop shut itself off because of low battery. I started the laptop and then the pop ups started. I used my USB flash drive before these problems started. The pendrive had a shortcut to itself. Can someone please tell me how to get rid of these pop ups 
Thank you
follow instructions here https://forum.avast.com/index.php?topic=53253.0
attach Malwarebytes and Farbar Recovery Scan Tool logs … 3 logs total
see below the box you write in … Attachments and other options
to clean your USB stick, scroll down to SPECIFIC INFECTIONS LOGS picture nr #5
Follow MCShield instructions
it is past midnight here in europe so malware removal team is off line now, check back tomorrow
Followed all the steps.
First step (Malwarebytes Anti-Malware) solved the problem. MBAM detected and removed all the infections. After restarting the laptop, the pop-ups stopped. I’ve followed the rest of the steps too.
I’ve attached the log files.
Thank you for the quick response and solution 
When I plugged in the pendrive (before the pop-ups problem), I scanned it with avast before opening, avast did not detect anything. When I opened it there was a shortcut file in it and I deleted it. The problems started after I ejected my pendrive.
After running the suggested softwares, I plugged in the pendrive again and scanned it with MCShield. It too didn’t find any malware. But the pop-ups started after using the pendrive. I’m confused. Is it safe to use my pendrive?
I’ve attached the MCShield log.
If MCShield is not detecting it then I would recommend that you wipe the USB drive
CAUTION : This fix is only valid for this specific machine, using it on another may break your computer
Open notepad and copy/paste the text in the quotebox below into it:
CreateRestorePoint: 2015-07-30 02:46 - 2015-04-19 02:19 - 00000000 ____D C:\ProgramData\E1864A66-75E3-486a-BD95-D1B7D99A84A7 2015-08-22 05:41 - 2015-08-22 05:41 - 00000000 ____D C:\Users\M BS.Laxmi\AppData\Local\{F70FCFED-DE9F-4F19-BF58-029A8DBA39DA} 2015-08-26 23:12 - 2015-08-26 23:12 - 00000000 ____D C:\Users\M BS.Laxmi\AppData\Local\{01E000B5-9D29-4B0D-BF49-9ACDFE2D61DC} 2009-07-14 05:01 - 2009-07-14 06:44 - 84733824 ___SH () C:\ProgramData\msgrh.exe 2015-04-23 03:13 - 2015-04-23 03:13 - 0004138 _____ () C:\ProgramData\updkbqqg.iqa Reg: reg delete HKLM\SOFTWARE\Policies\Microsoft\Windows\IPSec\Policy\Local /f Reg: reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\IPSec\Policy\Local /f Reg: Reg Delete "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /F Reg: Reg Add "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /F RemoveProxy: EmptyTemp: CMD: bitsadmin /reset /allusers
Save this as fixlist.txt, in the same location as FRST.exe
https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG
Run FRST and press Fix
On completion a log will be generated please post that
Attached the log.
Have the alerts now ceased
Yes, the alerts have ceased
Subject to no further problems
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean 
A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:
Remove tools
Download and run Delfix
Select the options as shown
https://dl.dropboxusercontent.com/u/73555776/delfix.JPG
: Keep Java Updated :
WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article
I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)
If you do need to keep Java then download JavaRa
Run the programme and select Remove Java Runtime. Uninstall all versions of Java present
Once done then run it again and select Update Java runtime > Download and install Latest version
https://dl.dropboxusercontent.com/u/73555776/javara.JPG
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
Update and run weekly to keep your system clean
Click on the link above to be taken to Unchecky.com
click the very large Download button.
click Save
Click Open folder
Right click on the Unchecky_setup and choose to Run as Administrator
Once open click the Install button.
Then click on Finish
Unchecky is now installed and will help you keep unwanted check boxes unchecked, this is a fire and forget programme 
It is critical to have both a firewall and anti virus to protect your system and to keep them updated.
To learn more about how to protect yourself while on the internet read this little guide Best security practices Keep safe 