Hi Garuna,
I understand what you're saying. Answer to your first question is
"No", not necessarily. Sometimes, spyware viruses will just hinder an Internet Wi-Fi connection, or an Internet wired connection. Usually what happens is the spyware virus is contained within a small program or app on your computer such as Yahoo or IOBIT toolbars, for example. During your normal maintenance activity, you see those programs there and you don't remember installing them or you just are no longer using them; and you remove them--and BAM!! you've just launched a spyware virus which hinders your Internet by deleting critical files from the Windows networking system file library.
I know this since I've removed infected programs before, and had done my speedtest.net speedtesting on them
BEFORE I deleted them. Internet Wi-Fi/wired didn't stop working, the speed just throttled way back like yours did.
Of course, I've seen the complete Internet-disabled thing where you get no Internet whatsoever on just the Wi-Fi or just the Wired Ethernet connection (cable) or sometimes
BOTH!
That beings said, you're assumption is faulty. Proceeding with the next logical step, you're going to reinstall W10, and if you do it correctly and by correctly I mean you must
DELETE & FORMAT ALL PARTITIONS on your
C: bootdrive; otherwise you may not remove all viruses, especially the hidden ones such as Rootkits & Bootkits. This should fix the problem.
If it doesn't, I'm going to replay and add to the suggestions we made to you already which you must take to fix the problem:
1.) Make sure to
BACKUP ALL PERSONAL DATA FROM THIS COMPUTER PRIOR TO ATTEMPTING FURTHER HARDWARE TESTING OR SOFTWARE REPAIRS IN ORDER TO AVOID IRRETRIEVABLE DATA LOSS!!!
2.) CAUTION: Make certain prior to any of the troubleshooting or testing or repairs are done
TO PHYSICALLY DISCONNECT OR REMOVE ANY AND ALL SECONDARY INTERNAL OR EXTERNAL HARD DRIVES FROM YOUR MOTHERBOARD AND POWER SUPPLY!! IF YOU DON'T DO THIS YOU MAY EXPERIENCE INDETERMINATE OR UNEXPECTED RESULTS!!
3.) Take our suggestion of creating a
Ubuntu or
Mint or other Linux free distro in bootable form (DVD or USB) and boot your computer from the media by changing your
Boot Preference in your computer's
BIOS. Connect to the Internet and repeat your speedtest. If your speed comes back to where it's supposed to be (as your other devices are doing), most likely your W10 install has a problem or perhaps your W10 source media for the new version of W10 you installed.
Re-download the source media (ISO file)for W10 from here:
Link Removed and reinstall your W10 from bootable media using the Microsoft
MCT (
Media
Creation
Tool) on this link's web page. This should fix the problem, assuming no other hardware failures such as a bad
RAM Stick or
Hard drive.
4.) If after testing with the Linux bootable media in
STEP #3 above fails, and your Internet speed is still slow or doesn't work at all (either on Wi-Fi or Wired Internet), then it's not the fault of your current or newly attempted W10, and is clearly a hardware issue. At this point you will need to conduct comprehensive hardware testing to determine if your WLAN card has actually failed or not. Take a look at my excellent step-by-step free
TROUBLESHOOTING GUIDE available here to do this:
Windows 10 - Unclickable Task Bar
After completing the hardware testing, and you can achieve a pass on all
RAM STICKS and your
HARD DRIVE, you will have narrowed down your suspected hardware failure to your
WLAN card or your Motherboard. Since Motherboard replacements can be from
$80-$1,500 US depending on what part of the world you live in, it makes sense to test and or replace the WLAN card first.
See next item for this.
5.) If
Step #4 still shows reduced or inoperable Wi-Fi, it's easiest to simply purchase an external USB plug-in adapter for
$35-$50 US that is a name brand manufacturer such as Cisco/Linkys or Netgear.
[do not use other brands that are cheaper such as D-link or TP-link; as those are not reliable for testing purposes and their drivers are unreliable and can scramble your W10!]. Retest your speed with your bootable Linux media or with the W10 build. If your speed comes back, your WLAN card has failed and must be replaced!
Prices for the part vary as neemo and I stated; but should be under $50 US. This usually is a
$125-$200 US repair price due to the large amount of labor time required to replace the WLAN card as I mentioned in my last post. If you have a laptop with an access port, you could buy the part yourself and do the repair in about an hour for well
under $100.
6.) If you are hesitant about replacing the WLAN card yourself, or you have one of the many newer laptops where there is no Easy-Button access port to the WLAN card slot, you can pay a licensed Computer Tech to replace this for you as in
Step #5 above. Or of course, you could simply leave the
EXTERNAL USB WI-FI ADAPTER your purchased, in the Vaio laptop's USB port and simply disable the internal WLAN card in your laptop's BIOS.
Lots of my customers decide to do this when I inform them of the repair cost to replace the internal WLAN card in their laptops.
**NOTE: Of course, if you ever have to take your laptop with you outside of your home and need Wi-Fi you'll need to remember to take your USB Wi-Fi adapter along with the laptop. For people who transport their laptops in a Case, this often means unplugging your USB Wi-Fi dongle from the laptop, and throwing it into a zippered compartment of the laptop Case so you don't forget it! Otherwise no Wi-Fi when you get to where you're going like work, friend's house, school, etc. and no Wi-Fi adapter, no Internet!
If you've spent the time to read this entire post, please do not feel that you have to do all of this or even any of it. Your problem of slowed-down Internet is quite ubiquitous, and we are seeing this a lot, so not only did I write it for you, but for all of our other current and future forum users here at
WF (
Windows
Forum). I do this a lot, as you can see by the extensive
TROUBLESHOOTING GUIDE I referred you to above. Hardware testing is the most difficult thing for people to do on their own at home, especially for people with limited computer skills. You don't appear to be in that category. However, it's like getting a book from the library and trying to fix your own leaky sink or toilet. Maybe 1 in a 100 can do it the first time without ever having done it before--assuming they own or buy the correct tools to do the repair.
Most of the tools we recommend here are very low-cost, varying from a
$0.20 US DVD blank disc to a
$7-$15 US blank USB flash drive. All the software we recommend is mostly free; some will cost a bit over $25, but that's only if you decide to keep it and like it. But, it's not mandatory to buy it. Many of us here like to use
"try-it-before-you-buy-it" software tools.
Thanks for reading my Post and let us know how you get on.
Best of luck to you,
<<<BIGBEARJEDI>>>