Others had problems today as well, and they did not have a malware issue. Make sure you have cleaned cookies and temporary internet files. Following that, reboot and try again. Be sure to use the same email address that you have ALWAYS used. If you continue to have login problems, please post back here and we will let the Forum Admin know.
A couple days ago i noticed my Antivirus alarm going off every few minutes like my machine was under attack so i of course cleaned the whole machine and installed Malware bytes finding more stuff that the AV did not find.. The reason i am posting here is because today i went to login to my Dell.com account and i cant ?. When i request a password it says it has no record of my Email at all but i created this account today with that very same Email and password plus when i created the account it knew my name as it says at the top of the page  Welcome so and so if your not so and so click here.  So i know Dell has my information somewhere ?   I was not sure where else to post this so i came to this portion of the forum and since its Sunday i dont think i can contact any live person . I called my friend thinking maybe there login server was down but he logged in right away and the only thing i can think of is since it says if you fail to login after 6 attempts your account will be locked so maybe my account is locked ?. I managed to login to Dell Financial Services no problem so again i am confused :(.. 
Cant login to Dell.com and think i was hacked.