* { padding: 0; margin: 0; } *, :after, :before { box-sizing: border-box; } .nav-global { background-color: #f0f0f0; display: none; padding: 0 1rem; } ul { display: flex; font-size: .8125rem; margin: 0; padding: 0; height: 100%; } li { list-style: none; position: relative; margin: 0 .75rem; } li:first-child { margin-left: 0; } li:last-child { margin-right: 0; } li a { display: flex; align-items: center; padding: 1rem 0; text-decoration: none; color: #474747; } li a:hover:after, li:hover>a:after { content: ""; border-bottom: 3px solid #80c343; position: absolute; left: 0; bottom: 0; min-width: 100%; z-index: 1; } @media (min-width: 900px) { .nav-global { display: flex; justify-content: space-between; align-items: center; } ul { font-size: .875rem; } } @font-face {font-family: 'Material Icons'; font-style: normal; font-weight: 400; src: url(https://fonts.gstatic.com/s/materialicons/v139/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2) format('woff2'); } .material-icons {font-family: 'Material Icons'; font-weight: normal; font-style: normal; font-size: 24px; line-height: 1; letter-spacing: normal; text-transform: none; display: inline-block; white-space: nowrap; word-wrap: normal; direction: ltr; -webkit-font-feature-settings: 'liga'; -webkit-font-smoothing: antialiased; } .footer *,:after,:before {box-sizing: border-box} footer,nav,section {display: block } .footer {font-size: 16px; scroll-behavior: smooth; margin: 0; font-family: 'Noto Sans',sans-serif; font-weight: 400; line-height: 1.5; -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: rgba(0,0,0,0); -ms-text-size-adjust: 100%; -ms-overflow-style: scrollbar;} .footer ol, .footer ul {padding-left: 2rem; margin-top: 0; margin-bottom: 1rem } .footer img {vertical-align: middle } .footer p {font-size: 1rem; font-weight: 400; line-height: 1.5; margin-top: 0; margin-bottom: 1rem } .footer a {text-decoration: none; color: #222; font-size: inherit; font-weight: inherit;} .footer a:hover {text-decoration: underline;color: inherit;} .footer-nav {display: flex; flex-wrap: wrap; width: 100%; background-color: #fafafa; } .footer-nav__section {flex: 1 1 25% } p.footer-nav__title {font-size: 1rem; font-weight: 600; margin: 0; position: relative } .footer-nav__caret {position: absolute; right: 1rem; font-size: 34px; color: #80c343 } ul.footer-nav__list {margin: 0; padding: 0; height: 0; visibility: hidden; transition: transform .1s ease-in-out; transform: scaleY(0); transform-origin: top } .is-open ul.footer-nav__list {visibility: visible; transform: scaleY(1); height: auto; transition: transform .3s ease-in-out } .footer-nav__item .footer-nav__link {padding-left: 0 } .footer-nav__item:last-child .footer-nav__link {border: 0 } .footer-nav__link {display: block; padding: 1.5rem 1rem } .footer-nav__link:hover {text-decoration: none } .is-open .footer-nav__link>.material-icons {transform: rotate(180deg) } ul.footer-nav__list li {font-size: .875rem; list-style: none; padding: 0 26px } ul.footer-nav__list li a {display: block; padding: 1.5rem 1rem; font-size: .875rem; color: #222; } ul.footer-nav__list li a:hover {text-decoration: none } ul.footer-nav__list li:last-child a {border: 0 } .is-open ul.footer-nav__list li a > .material-icons {transform: rotate(180deg) } .footer-bottom {display: flex; flex-wrap: wrap; justify-content: center; padding: 2rem 1.5rem; background-color: #1a1a1a; color: #fafafa } .footer-bottom .nav-legal {width: 100%; text-align: center } .footer-bottom .nav-legal .menu--legal {display: block; margin: 0 0 1rem; padding: 0; width: 100% } .footer-bottom .nav-legal .menu--legal li {display: inline-flex; font-size: .8125rem; border-right: 1px solid #89898b; padding: 0 .5rem } .footer-bottom .nav-legal .menu--legal li:last-child {border: 0; padding-right: 0;} .footer-bottom .nav-legal .menu--legal li:first-child {padding-left: 0;} .footer-bottom .nav-legal .menu--legal a {padding: 1px; color: #fafafa;} .footer-bottom .nav-legal .menu--legal a:hover {color: #fff;} .footer-bottom .social {display: flex; width: 100%; justify-content: center } .footer-bottom .social .social__list {list-style: none; padding: 0; margin: 0; display: inline-flex; flex-direction: row; flex-wrap: wrap; justify-content: flex-start; max-width: 260px } .footer-bottom .social li {background-color: #474747; border-radius: 9999px; height: 34px; width: 34px; display: flex; flex-direction: column; align-items: center; justify-content: center; margin: 0 15px 30px } .footer-bottom .social li a {display: block; color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center } .footer-bottom .social li a:hover {color: #80c343; text-decoration: none } .footer-bottom .locale {display: flex; justify-content: center; align-items: center; width: 100% } .footer-bottom .locale .material-icons {color: #767676; margin-right: .5rem; font-size: 1.125rem } .footer-bottom .locale:hover .material-icons {text-decoration: none } .footer-bottom .locale .locale__text {font-size: .8125rem; color: #fafafa } .footer-bottom .copyright {font-size: 10px; color: grey; text-align: center; width: 100% } .footer-bottom .copyright p {font-size: .625rem; color: #fff } @media(min-width: 640px) { .footer-bottom .social .social__list {max-width:100% } } @media(min-width: 900px) { .footer-nav {flex-direction:row; flex-wrap: nowrap; justify-content: space-between; padding: 3rem 1.5rem } p.footer-nav__title {font-size:1.25rem; } p.footer-nav__title a {cursor: text;} .footer-nav__item {border:0; padding: 0 } .footer-nav__link {padding:.2rem 0 } .footer-nav__link:hover {text-decoration:underline } ul.footer-nav__list {height:100%; visibility: visible; transform: scaleY(1) } ul.footer-nav__list li {border:0; padding: 0; font-size:.875rem; } ul.footer-nav__list li a {padding:.2rem 0; } ul.footer-nav__list li a:hover {text-decoration:underline; } .footer-nav__caret {display: none; } .footer-bottom .nav-legal {width:50%; text-align: left } .footer-bottom .nav-legal .menu--legal li {font-size:.875rem } .footer-bottom .social {width:50%; justify-content: flex-end } .footer-bottom .social li {margin:0 6px 15px } .footer-bottom .locale {width:50%; justify-content: flex-end } .footer-bottom .locale .locale__text {font-size:.875rem } .footer-bottom .copyright {width:50%; text-align: left } .footer-bottom .copyright p {font-size:.75rem } } @media(max-width: 899px) { .footer-nav__section {flex: 1 1 100%; border-bottom: 1px solid #c9c9c9 } .footer-nav__section:last-child {border: 0;} .footer-nav__link {border-bottom: 1px solid #c9c9c9;} p.footer-nav__title {font-size: 1rem; font-weight: 600; } } <iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KR777P" height="0" width="0" style="display:none;visibility:hidden"></iframe>

Acer Answers

Driver Display Error after Sleep or Prolonged Idle Periods May Cause Vertical White Lines on Display

This article only applies to: E5-491, E5-491G, E5-491T, R5-431, R5-431T, R5-471T, R7-370T, R7-372T, G9-591, G9-592, G9-592R, G9-791, G9-792, G9100, S5-371, S5-371T-

Acer is aware of an issue with the Intel HD 510 and 520 Display Driver on several products. After allowing the system to sleep, white lines and other abnormalities may appear. Acer is working with Microsoft and Intel to resolve this issue. For now, Acer recommends performing a roll back on the driver.

Note: Starting with Windows 10 Anniversary update, once a driver is rolled back, Windows will not push this driver again until an update has been made.

Use the following steps to rollback the Intel HD display driver:

Type Device Manager in the Windows Search Box, and select Device Manager from the list of search results.
Locate and Right Click on the Intel HD 520 driver under Display.
Select Properties.
Select the Driver tab.
Select Roll Back Driver.

If you are still experiencing a problem, please contact Acer support for further assistance..